Are they using the NIP-42 client auth to prevent others from reading?
Discussion
Nostr-rs-relay doesn’t seem to support this NIP (which is what umbrel is using). Does any client even support that yet?
Not as far as I know. That’s why I’m curious how umbrel is protecting the read side of the relay if it’s available on the internet. If it’s only local net, how can you share it w friends/family?
Tailscale.
Tailscale works for personal use (think long term archival). Not meant for friends/family use. Don’t think there’s a very good solution for this as of yet.